William



ALL WHOM IT MAY CONOERN:

@einen tsts eiwt ffit.

`WILLIIIIIIJ,I,I1\IroI\I, or DETROIT, MICHIGAN.

Letters Patent No.-81,884, dated August 25, 1868.

IMPROVED DEVICE FOR LOCKING LOOSE PULLEYS.

Be it known that I, WILLIAM J'. LINTN, of Detroit, in the county-ofWayne, and State of Michigan, have invented a new and useful Improvementin Locking-Device for Loose Pulleys; and I do hereby declare that thefollowing is a. full, clear, and exact description thereof, which willenable others skilled in the art to make and use the same, `referencebingihad to the accompanying drawings, forming part of thisspecification.

The object of this invention .is to provide a simple and effectivelocking-device, to he used in machinery when pulleys or other wheels arerequired to'run loose or fast on a shaft, for locking and unlockingthem.

Itconsists in a hollow sleeve, provided with a screw-thread on one end,and having along slotand two holes in the plain portion thereof, andprovided with a pin, arranged to slide longitudinally in the sleeve, thesaid pin being provided with a spring, arranged in a longitudinalgroove, and having a stud to t the holes in the sleeve, anda setscrewworking in the s lot in thesleeve, to prevent the pin from turningaround in the said sleeve, which is screwed into a collar on a shaft orin a fast wheel, in a manner to allow the said pin to he pushedforwardinto a hole in a loose wheel'running adjacent to the collar or fastwheel, and locking them together, or be drawn back to allow the pulleyto 1=unlcose, the said pin being locked in 'either position by thesprings, as will be more fully described' on reference to theaeeompanyingdrawings, 'wherein-1 Figure lrepresents a longitudinalsection of my improved locking-device and a section of a collar vorwheel shown in red, and

Figure 2 represents a cross-section of the same on the line a: offlg. 1.

Similar letters of referenceindicate corresponding parts.

A represents a hollow sleeve, provided with ashouldered and screwed end,a, and with holes b b, and a slot, C.

' B represents a pin, having a milled head, and a longitudinal groove,cl,.in which is secured, at e, a spring,

D, havngnI turned-up end,f, and which is also provided with a stud, g.The pin B is'also provided with a pin, projecting into the slot CL Erepresents, in red, what may be considered a collar, securedto a shaft,or, as in turninglathes, it may be considered a section of the fastplate of a live spindle, and is designed to serve as a means of lockingthe same to the cone-pulley which runs on the shaft adjacent there-to,and which is provided with one or more holes Acoincidingl with the 'hole through the sleeve A, When it is desired to lock the `plate andwh'eel together, the

pin is shoved into the position shown in the drawings, thc inn-erendprojecting into the said hole in the wheel, connecting the tworigidly together, and the stud g on'the spring dropping into the innerhole I) in the sleeve, thereby loekingthe pin in its position. I

When it is desired to disconnect thc pulley from the plate, the pin isdrawn out, the spring being pressed inward by tne thumb and fingers, towithdrew the stud from the hole b, and when released, after the pin iswithdrawn, forcingthe stud into the other hole, thereby locking the pinalso in that position.

I claim as new, and desire to secure by Letters Patentl Thoimprovedlocking-device herein described, consisting,r of the sleeve, slidingpin, stationary pin, spring, and stud, all arranged substantiallyas setforth. i

The above specification of my invention signed by me, this 11th day otApril, 1868.

' 4 WILLIAM J. LINTON.

' Witnesses WM. F. MoNArIAnA, ALEX. F. Renners.

